struct Equality operator Immediate Window weird behaviour

Question

I'm doing some experiments with structs and operators, and I came across a situation that I cannot understand.

I have a struct that only contains an int. I've also implemteted 'implicit operator' methods so I can assign an int directly to it and I've implemented the Equality operators

Everything seems to be working fine at runtime, but if I make a breakpoint, and execute this ((TestStruct)1) == ((TestStruct)1); in the Immediate Window it returns false, but at runtime it returns true (as I was expecting).

If I put another breakpoint, on the Equality operator, I can see that the code in there is being executed, but the values for my structs are not '1' as I was expecting, but some random ones.

Here is my sample code:

class Program
{
    static void Main(string[] args)
    {
        bool areEqual = ((TestStruct)1) == ((TestStruct)1);
        string breakPoint = ";)";
    }
}

struct TestStruct
{
    private Int32 value;
    public TestStruct(Int32 value)
    {
        this.value = value;
    }

    static public implicit operator TestStruct(Int32 value)
    {
        return new TestStruct(value);
    }

    public static bool operator ==(TestStruct ptr1, TestStruct ptr2)
    {
        return ptr1.value == ptr2.value;
    }
    public static bool operator !=(TestStruct ptr1, TestStruct ptr2)
    {
        return ptr1.value != ptr2.value;
    }
}

Edit It seems to work fine if used with VS 2013, this issue seems to occur only with VS 2015

Answer 1

It seems to be a Visual Studio 2015 bug as Hans Passant found out

Thanks ;)